While largely dedicated to DVD backup and other kinds of "ripping," the [AviSynth Usage forum] at [Doom9] has a very high s/n ratio for technical people who dig desktop video. It's no coincidence many AviSynth developers hang out there (and the newer [AviSynth Development forum]); in fact, for any issues beyond structured bug reporting & feature requests, it's probably an even better place to interact with the development team than SourceForge.